Synthesis 2023; 55(18): 2833-2842
DOI: 10.1055/a-2020-8923
short review
Special Issue Electrochemical Organic Synthesis

Recent Advances in Electro- or Photochemical Driven Transformations via Cleavage of the C–N Bond of Quaternary Ammonium Salts

Xiaohui Chen
a   School of Chemical Engineering and Materials, Changzhou Institute of Technology, No. 666 Liaohe Road, Changzhou 213032, P. R. of China
,
Neng-Zhong Wang
b   Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, Hubei 443002, P. R. of China
,
Ya-Min Cheng
c   College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. of China
,
Xianqiang Kong
a   School of Chemical Engineering and Materials, Changzhou Institute of Technology, No. 666 Liaohe Road, Changzhou 213032, P. R. of China
,
Zhong-Yan Cao
c   College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. of China
› Author Affiliations
We thank the funding from the National Natural Science Foundation of China (NSFC) (22102012, 22202021, 22272011, and 22201062), Changzhou Science and Technology Plan Applied Basic Research Project (CJ20210159, CJ20210129, and CZ20220022), Natural Science Foundation of Henan Province (K22029Y), the Jiangsu Higher Education­ Institutions of China (22KJA150001, 21KJD530003, 21KJB530013), and the opening funding of Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University (2022NPRD02).


Abstract

Selective functionalization via cleavage of the C–N bond of amines has proven to be challenging partly because of its relatively high bond dissociation energy, even though amines are abundant and readily available. To meet this challenge, many new transformations based on the pre-activation of the C–N bond before the cleavage have been developed. Among them, the conversion of amines into quaternary ammonium salts has certain advantages, such as easy preparation from primary, secondary, or tertiary amines, as well as stable storage and usage. Although transition metal catalysis has been frequently applied for developing new transformations via oxidative addition of the C–N bond of quaternary ammonium salts, recent studies have shown a new dimension by using green electro- or photochemical tools. In this short review, recent advances in electro-, photo-, or photoelectrochemical driven synthetic applications of quaternary ammonium salts have been summarized and discussed.

1 Introduction

2 Electrochemical Driven Transformations

3 Photochemical Driven Transformations

4 Photoelectrochemical Driven Transformations

5 Conclusion and Outlook



Publication History

Received: 30 December 2022

Accepted after revision: 26 January 2023

Accepted Manuscript online:
26 January 2023

Article published online:
01 March 2023

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